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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2013 poljar (Damir Jelić) <poljarinho@gmail.com> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include <config.h> | |
21 | #include <stdlib.h> | |
22 | #include "scpi.h" | |
23 | #include "protocol.h" | |
24 | ||
25 | #define SERIALCOMM "115200/8n1/flow=1" | |
26 | ||
27 | static struct sr_dev_driver hameg_hmo_driver_info; | |
28 | ||
29 | static const char *manufacturers[] = { | |
30 | "HAMEG", | |
31 | "Rohde&Schwarz", | |
32 | }; | |
33 | ||
34 | static const uint32_t drvopts[] = { | |
35 | SR_CONF_OSCILLOSCOPE, | |
36 | }; | |
37 | ||
38 | static const uint32_t scanopts[] = { | |
39 | SR_CONF_CONN, | |
40 | SR_CONF_SERIALCOMM, | |
41 | }; | |
42 | ||
43 | enum { | |
44 | CG_INVALID = -1, | |
45 | CG_NONE, | |
46 | CG_ANALOG, | |
47 | CG_DIGITAL, | |
48 | }; | |
49 | ||
50 | static int check_manufacturer(const char *manufacturer) | |
51 | { | |
52 | unsigned int i; | |
53 | ||
54 | for (i = 0; i < ARRAY_SIZE(manufacturers); i++) | |
55 | if (!strcmp(manufacturer, manufacturers[i])) | |
56 | return SR_OK; | |
57 | ||
58 | return SR_ERR; | |
59 | } | |
60 | ||
61 | static struct sr_dev_inst *hmo_probe_serial_device(struct sr_scpi_dev_inst *scpi) | |
62 | { | |
63 | struct sr_dev_inst *sdi; | |
64 | struct dev_context *devc; | |
65 | struct sr_scpi_hw_info *hw_info; | |
66 | ||
67 | sdi = NULL; | |
68 | devc = NULL; | |
69 | hw_info = NULL; | |
70 | ||
71 | if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) { | |
72 | sr_info("Couldn't get IDN response."); | |
73 | goto fail; | |
74 | } | |
75 | ||
76 | if (check_manufacturer(hw_info->manufacturer) != SR_OK) | |
77 | goto fail; | |
78 | ||
79 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
80 | sdi->vendor = g_strdup(hw_info->manufacturer); | |
81 | sdi->model = g_strdup(hw_info->model); | |
82 | sdi->version = g_strdup(hw_info->firmware_version); | |
83 | sdi->serial_num = g_strdup(hw_info->serial_number); | |
84 | sdi->driver = &hameg_hmo_driver_info; | |
85 | sdi->inst_type = SR_INST_SCPI; | |
86 | sdi->conn = scpi; | |
87 | ||
88 | sr_scpi_hw_info_free(hw_info); | |
89 | hw_info = NULL; | |
90 | ||
91 | devc = g_malloc0(sizeof(struct dev_context)); | |
92 | ||
93 | sdi->priv = devc; | |
94 | ||
95 | if (hmo_init_device(sdi) != SR_OK) | |
96 | goto fail; | |
97 | ||
98 | return sdi; | |
99 | ||
100 | fail: | |
101 | sr_scpi_hw_info_free(hw_info); | |
102 | sr_dev_inst_free(sdi); | |
103 | g_free(devc); | |
104 | ||
105 | return NULL; | |
106 | } | |
107 | ||
108 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
109 | { | |
110 | return sr_scpi_scan(di->context, options, hmo_probe_serial_device); | |
111 | } | |
112 | ||
113 | static void clear_helper(struct dev_context *devc) | |
114 | { | |
115 | hmo_scope_state_free(devc->model_state); | |
116 | g_free(devc->analog_groups); | |
117 | g_free(devc->digital_groups); | |
118 | } | |
119 | ||
120 | static int dev_clear(const struct sr_dev_driver *di) | |
121 | { | |
122 | return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper); | |
123 | } | |
124 | ||
125 | static int dev_open(struct sr_dev_inst *sdi) | |
126 | { | |
127 | if (sr_scpi_open(sdi->conn) != SR_OK) | |
128 | return SR_ERR; | |
129 | ||
130 | if (hmo_scope_state_get(sdi) != SR_OK) | |
131 | return SR_ERR; | |
132 | ||
133 | return SR_OK; | |
134 | } | |
135 | ||
136 | static int dev_close(struct sr_dev_inst *sdi) | |
137 | { | |
138 | return sr_scpi_close(sdi->conn); | |
139 | } | |
140 | ||
141 | static int check_channel_group(struct dev_context *devc, | |
142 | const struct sr_channel_group *cg) | |
143 | { | |
144 | unsigned int i; | |
145 | const struct scope_config *model; | |
146 | ||
147 | model = devc->model_config; | |
148 | ||
149 | if (!cg) | |
150 | return CG_NONE; | |
151 | ||
152 | for (i = 0; i < model->analog_channels; i++) | |
153 | if (cg == devc->analog_groups[i]) | |
154 | return CG_ANALOG; | |
155 | ||
156 | for (i = 0; i < model->digital_pods; i++) | |
157 | if (cg == devc->digital_groups[i]) | |
158 | return CG_DIGITAL; | |
159 | ||
160 | sr_err("Invalid channel group specified."); | |
161 | ||
162 | return CG_INVALID; | |
163 | } | |
164 | ||
165 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
166 | const struct sr_channel_group *cg) | |
167 | { | |
168 | int ret, cg_type; | |
169 | unsigned int i; | |
170 | struct dev_context *devc; | |
171 | const struct scope_config *model; | |
172 | struct scope_state *state; | |
173 | ||
174 | if (!sdi) | |
175 | return SR_ERR_ARG; | |
176 | ||
177 | devc = sdi->priv; | |
178 | ||
179 | if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID) | |
180 | return SR_ERR; | |
181 | ||
182 | ret = SR_ERR_NA; | |
183 | model = devc->model_config; | |
184 | state = devc->model_state; | |
185 | ||
186 | switch (key) { | |
187 | case SR_CONF_NUM_HDIV: | |
188 | *data = g_variant_new_int32(model->num_xdivs); | |
189 | ret = SR_OK; | |
190 | break; | |
191 | case SR_CONF_TIMEBASE: | |
192 | *data = g_variant_new("(tt)", (*model->timebases)[state->timebase][0], | |
193 | (*model->timebases)[state->timebase][1]); | |
194 | ret = SR_OK; | |
195 | break; | |
196 | case SR_CONF_NUM_VDIV: | |
197 | if (cg_type == CG_NONE) { | |
198 | sr_err("No channel group specified."); | |
199 | return SR_ERR_CHANNEL_GROUP; | |
200 | } else if (cg_type == CG_ANALOG) { | |
201 | for (i = 0; i < model->analog_channels; i++) { | |
202 | if (cg != devc->analog_groups[i]) | |
203 | continue; | |
204 | *data = g_variant_new_int32(model->num_ydivs); | |
205 | ret = SR_OK; | |
206 | break; | |
207 | } | |
208 | ||
209 | } else { | |
210 | ret = SR_ERR_NA; | |
211 | } | |
212 | break; | |
213 | case SR_CONF_VDIV: | |
214 | if (cg_type == CG_NONE) { | |
215 | sr_err("No channel group specified."); | |
216 | return SR_ERR_CHANNEL_GROUP; | |
217 | } else if (cg_type == CG_ANALOG) { | |
218 | for (i = 0; i < model->analog_channels; i++) { | |
219 | if (cg != devc->analog_groups[i]) | |
220 | continue; | |
221 | *data = g_variant_new("(tt)", | |
222 | (*model->vdivs)[state->analog_channels[i].vdiv][0], | |
223 | (*model->vdivs)[state->analog_channels[i].vdiv][1]); | |
224 | ret = SR_OK; | |
225 | break; | |
226 | } | |
227 | ||
228 | } else { | |
229 | ret = SR_ERR_NA; | |
230 | } | |
231 | break; | |
232 | case SR_CONF_TRIGGER_SOURCE: | |
233 | *data = g_variant_new_string((*model->trigger_sources)[state->trigger_source]); | |
234 | ret = SR_OK; | |
235 | break; | |
236 | case SR_CONF_TRIGGER_SLOPE: | |
237 | *data = g_variant_new_string((*model->trigger_slopes)[state->trigger_slope]); | |
238 | ret = SR_OK; | |
239 | break; | |
240 | case SR_CONF_HORIZ_TRIGGERPOS: | |
241 | *data = g_variant_new_double(state->horiz_triggerpos); | |
242 | ret = SR_OK; | |
243 | break; | |
244 | case SR_CONF_COUPLING: | |
245 | if (cg_type == CG_NONE) { | |
246 | sr_err("No channel group specified."); | |
247 | return SR_ERR_CHANNEL_GROUP; | |
248 | } else if (cg_type == CG_ANALOG) { | |
249 | for (i = 0; i < model->analog_channels; i++) { | |
250 | if (cg != devc->analog_groups[i]) | |
251 | continue; | |
252 | *data = g_variant_new_string((*model->coupling_options)[state->analog_channels[i].coupling]); | |
253 | ret = SR_OK; | |
254 | break; | |
255 | } | |
256 | ||
257 | } else { | |
258 | ret = SR_ERR_NA; | |
259 | } | |
260 | break; | |
261 | case SR_CONF_SAMPLERATE: | |
262 | *data = g_variant_new_uint64(state->sample_rate); | |
263 | ret = SR_OK; | |
264 | break; | |
265 | default: | |
266 | ret = SR_ERR_NA; | |
267 | } | |
268 | ||
269 | return ret; | |
270 | } | |
271 | ||
272 | static GVariant *build_tuples(const uint64_t (*array)[][2], unsigned int n) | |
273 | { | |
274 | unsigned int i; | |
275 | GVariant *rational[2]; | |
276 | GVariantBuilder gvb; | |
277 | ||
278 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
279 | ||
280 | for (i = 0; i < n; i++) { | |
281 | rational[0] = g_variant_new_uint64((*array)[i][0]); | |
282 | rational[1] = g_variant_new_uint64((*array)[i][1]); | |
283 | ||
284 | /* FIXME: Valgrind reports a memory leak here. */ | |
285 | g_variant_builder_add_value(&gvb, g_variant_new_tuple(rational, 2)); | |
286 | } | |
287 | ||
288 | return g_variant_builder_end(&gvb); | |
289 | } | |
290 | ||
291 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
292 | const struct sr_channel_group *cg) | |
293 | { | |
294 | int ret, cg_type; | |
295 | unsigned int i, j; | |
296 | char command[MAX_COMMAND_SIZE], float_str[30]; | |
297 | struct dev_context *devc; | |
298 | const struct scope_config *model; | |
299 | struct scope_state *state; | |
300 | const char *tmp; | |
301 | uint64_t p, q; | |
302 | double tmp_d; | |
303 | gboolean update_sample_rate; | |
304 | ||
305 | if (!sdi) | |
306 | return SR_ERR_ARG; | |
307 | ||
308 | devc = sdi->priv; | |
309 | ||
310 | if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID) | |
311 | return SR_ERR; | |
312 | ||
313 | model = devc->model_config; | |
314 | state = devc->model_state; | |
315 | update_sample_rate = FALSE; | |
316 | ||
317 | ret = SR_ERR_NA; | |
318 | ||
319 | switch (key) { | |
320 | case SR_CONF_LIMIT_FRAMES: | |
321 | devc->frame_limit = g_variant_get_uint64(data); | |
322 | ret = SR_OK; | |
323 | break; | |
324 | case SR_CONF_TRIGGER_SOURCE: | |
325 | tmp = g_variant_get_string(data, NULL); | |
326 | for (i = 0; (*model->trigger_sources)[i]; i++) { | |
327 | if (g_strcmp0(tmp, (*model->trigger_sources)[i]) != 0) | |
328 | continue; | |
329 | state->trigger_source = i; | |
330 | g_snprintf(command, sizeof(command), | |
331 | (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SOURCE], | |
332 | (*model->trigger_sources)[i]); | |
333 | ||
334 | ret = sr_scpi_send(sdi->conn, command); | |
335 | break; | |
336 | } | |
337 | break; | |
338 | case SR_CONF_VDIV: | |
339 | if (cg_type == CG_NONE) { | |
340 | sr_err("No channel group specified."); | |
341 | return SR_ERR_CHANNEL_GROUP; | |
342 | } | |
343 | ||
344 | g_variant_get(data, "(tt)", &p, &q); | |
345 | ||
346 | for (i = 0; i < model->num_vdivs; i++) { | |
347 | if (p != (*model->vdivs)[i][0] || | |
348 | q != (*model->vdivs)[i][1]) | |
349 | continue; | |
350 | for (j = 1; j <= model->analog_channels; j++) { | |
351 | if (cg != devc->analog_groups[j - 1]) | |
352 | continue; | |
353 | state->analog_channels[j - 1].vdiv = i; | |
354 | g_ascii_formatd(float_str, sizeof(float_str), "%E", (float) p / q); | |
355 | g_snprintf(command, sizeof(command), | |
356 | (*model->scpi_dialect)[SCPI_CMD_SET_VERTICAL_DIV], | |
357 | j, float_str); | |
358 | ||
359 | if (sr_scpi_send(sdi->conn, command) != SR_OK || | |
360 | sr_scpi_get_opc(sdi->conn) != SR_OK) | |
361 | return SR_ERR; | |
362 | ||
363 | break; | |
364 | } | |
365 | ||
366 | ret = SR_OK; | |
367 | break; | |
368 | } | |
369 | break; | |
370 | case SR_CONF_TIMEBASE: | |
371 | g_variant_get(data, "(tt)", &p, &q); | |
372 | ||
373 | for (i = 0; i < model->num_timebases; i++) { | |
374 | if (p != (*model->timebases)[i][0] || | |
375 | q != (*model->timebases)[i][1]) | |
376 | continue; | |
377 | state->timebase = i; | |
378 | g_ascii_formatd(float_str, sizeof(float_str), "%E", (float) p / q); | |
379 | g_snprintf(command, sizeof(command), | |
380 | (*model->scpi_dialect)[SCPI_CMD_SET_TIMEBASE], | |
381 | float_str); | |
382 | ||
383 | ret = sr_scpi_send(sdi->conn, command); | |
384 | update_sample_rate = TRUE; | |
385 | break; | |
386 | } | |
387 | break; | |
388 | case SR_CONF_HORIZ_TRIGGERPOS: | |
389 | tmp_d = g_variant_get_double(data); | |
390 | ||
391 | if (tmp_d < 0.0 || tmp_d > 1.0) | |
392 | return SR_ERR; | |
393 | ||
394 | state->horiz_triggerpos = tmp_d; | |
395 | tmp_d = -(tmp_d - 0.5) * | |
396 | ((double) (*model->timebases)[state->timebase][0] / | |
397 | (*model->timebases)[state->timebase][1]) | |
398 | * model->num_xdivs; | |
399 | ||
400 | g_ascii_formatd(float_str, sizeof(float_str), "%E", tmp_d); | |
401 | g_snprintf(command, sizeof(command), | |
402 | (*model->scpi_dialect)[SCPI_CMD_SET_HORIZ_TRIGGERPOS], | |
403 | float_str); | |
404 | ||
405 | ret = sr_scpi_send(sdi->conn, command); | |
406 | break; | |
407 | case SR_CONF_TRIGGER_SLOPE: | |
408 | tmp = g_variant_get_string(data, NULL); | |
409 | for (i = 0; (*model->trigger_slopes)[i]; i++) { | |
410 | if (g_strcmp0(tmp, (*model->trigger_slopes)[i]) != 0) | |
411 | continue; | |
412 | state->trigger_slope = i; | |
413 | g_snprintf(command, sizeof(command), | |
414 | (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SLOPE], | |
415 | (*model->trigger_slopes)[i]); | |
416 | ||
417 | ret = sr_scpi_send(sdi->conn, command); | |
418 | break; | |
419 | } | |
420 | break; | |
421 | case SR_CONF_COUPLING: | |
422 | if (cg_type == CG_NONE) { | |
423 | sr_err("No channel group specified."); | |
424 | return SR_ERR_CHANNEL_GROUP; | |
425 | } | |
426 | ||
427 | tmp = g_variant_get_string(data, NULL); | |
428 | ||
429 | for (i = 0; (*model->coupling_options)[i]; i++) { | |
430 | if (strcmp(tmp, (*model->coupling_options)[i]) != 0) | |
431 | continue; | |
432 | for (j = 1; j <= model->analog_channels; j++) { | |
433 | if (cg != devc->analog_groups[j - 1]) | |
434 | continue; | |
435 | state->analog_channels[j-1].coupling = i; | |
436 | ||
437 | g_snprintf(command, sizeof(command), | |
438 | (*model->scpi_dialect)[SCPI_CMD_SET_COUPLING], | |
439 | j, tmp); | |
440 | ||
441 | if (sr_scpi_send(sdi->conn, command) != SR_OK || | |
442 | sr_scpi_get_opc(sdi->conn) != SR_OK) | |
443 | return SR_ERR; | |
444 | break; | |
445 | } | |
446 | ||
447 | ret = SR_OK; | |
448 | break; | |
449 | } | |
450 | break; | |
451 | default: | |
452 | ret = SR_ERR_NA; | |
453 | break; | |
454 | } | |
455 | ||
456 | if (ret == SR_OK) | |
457 | ret = sr_scpi_get_opc(sdi->conn); | |
458 | ||
459 | if (ret == SR_OK && update_sample_rate) | |
460 | ret = hmo_update_sample_rate(sdi); | |
461 | ||
462 | return ret; | |
463 | } | |
464 | ||
465 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
466 | const struct sr_channel_group *cg) | |
467 | { | |
468 | int cg_type = CG_NONE; | |
469 | struct dev_context *devc = NULL; | |
470 | const struct scope_config *model = NULL; | |
471 | ||
472 | if (sdi) { | |
473 | devc = sdi->priv; | |
474 | if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID) | |
475 | return SR_ERR; | |
476 | ||
477 | model = devc->model_config; | |
478 | } | |
479 | ||
480 | switch (key) { | |
481 | case SR_CONF_SCAN_OPTIONS: | |
482 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
483 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
484 | break; | |
485 | case SR_CONF_DEVICE_OPTIONS: | |
486 | if (cg_type == CG_NONE) { | |
487 | if (model) | |
488 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
489 | model->devopts, model->num_devopts, sizeof(uint32_t)); | |
490 | else | |
491 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
492 | drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t)); | |
493 | } else if (cg_type == CG_ANALOG) { | |
494 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
495 | model->analog_devopts, model->num_analog_devopts, | |
496 | sizeof(uint32_t)); | |
497 | } else { | |
498 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
499 | NULL, 0, sizeof(uint32_t)); | |
500 | } | |
501 | break; | |
502 | case SR_CONF_COUPLING: | |
503 | if (cg_type == CG_NONE) | |
504 | return SR_ERR_CHANNEL_GROUP; | |
505 | *data = g_variant_new_strv(*model->coupling_options, | |
506 | g_strv_length((char **)*model->coupling_options)); | |
507 | break; | |
508 | case SR_CONF_TRIGGER_SOURCE: | |
509 | if (!model) | |
510 | return SR_ERR_ARG; | |
511 | *data = g_variant_new_strv(*model->trigger_sources, | |
512 | g_strv_length((char **)*model->trigger_sources)); | |
513 | break; | |
514 | case SR_CONF_TRIGGER_SLOPE: | |
515 | if (!model) | |
516 | return SR_ERR_ARG; | |
517 | *data = g_variant_new_strv(*model->trigger_slopes, | |
518 | g_strv_length((char **)*model->trigger_slopes)); | |
519 | break; | |
520 | case SR_CONF_TIMEBASE: | |
521 | if (!model) | |
522 | return SR_ERR_ARG; | |
523 | *data = build_tuples(model->timebases, model->num_timebases); | |
524 | break; | |
525 | case SR_CONF_VDIV: | |
526 | if (cg_type == CG_NONE) | |
527 | return SR_ERR_CHANNEL_GROUP; | |
528 | *data = build_tuples(model->vdivs, model->num_vdivs); | |
529 | break; | |
530 | default: | |
531 | return SR_ERR_NA; | |
532 | } | |
533 | ||
534 | return SR_OK; | |
535 | } | |
536 | ||
537 | SR_PRIV int hmo_request_data(const struct sr_dev_inst *sdi) | |
538 | { | |
539 | char command[MAX_COMMAND_SIZE]; | |
540 | struct sr_channel *ch; | |
541 | struct dev_context *devc; | |
542 | const struct scope_config *model; | |
543 | ||
544 | devc = sdi->priv; | |
545 | model = devc->model_config; | |
546 | ||
547 | ch = devc->current_channel->data; | |
548 | ||
549 | switch (ch->type) { | |
550 | case SR_CHANNEL_ANALOG: | |
551 | g_snprintf(command, sizeof(command), | |
552 | (*model->scpi_dialect)[SCPI_CMD_GET_ANALOG_DATA], | |
553 | #ifdef WORDS_BIGENDIAN | |
554 | "MSBF", | |
555 | #else | |
556 | "LSBF", | |
557 | #endif | |
558 | ch->index + 1); | |
559 | break; | |
560 | case SR_CHANNEL_LOGIC: | |
561 | g_snprintf(command, sizeof(command), | |
562 | (*model->scpi_dialect)[SCPI_CMD_GET_DIG_DATA], | |
563 | ch->index < 8 ? 1 : 2); | |
564 | break; | |
565 | default: | |
566 | sr_err("Invalid channel type."); | |
567 | break; | |
568 | } | |
569 | ||
570 | return sr_scpi_send(sdi->conn, command); | |
571 | } | |
572 | ||
573 | static int hmo_check_channels(GSList *channels) | |
574 | { | |
575 | GSList *l; | |
576 | struct sr_channel *ch; | |
577 | gboolean enabled_chan[MAX_ANALOG_CHANNEL_COUNT]; | |
578 | gboolean enabled_pod[MAX_DIGITAL_GROUP_COUNT]; | |
579 | size_t idx; | |
580 | ||
581 | /* Preset "not enabled" for all channels / pods. */ | |
582 | for (idx = 0; idx < ARRAY_SIZE(enabled_chan); idx++) | |
583 | enabled_chan[idx] = FALSE; | |
584 | for (idx = 0; idx < ARRAY_SIZE(enabled_pod); idx++) | |
585 | enabled_pod[idx] = FALSE; | |
586 | ||
587 | /* | |
588 | * Determine which channels / pods are required for the caller's | |
589 | * specified configuration. | |
590 | */ | |
591 | for (l = channels; l; l = l->next) { | |
592 | ch = l->data; | |
593 | switch (ch->type) { | |
594 | case SR_CHANNEL_ANALOG: | |
595 | idx = ch->index; | |
596 | if (idx < ARRAY_SIZE(enabled_chan)) | |
597 | enabled_chan[idx] = TRUE; | |
598 | break; | |
599 | case SR_CHANNEL_LOGIC: | |
600 | idx = ch->index / 8; | |
601 | if (idx < ARRAY_SIZE(enabled_pod)) | |
602 | enabled_pod[idx] = TRUE; | |
603 | break; | |
604 | default: | |
605 | return SR_ERR; | |
606 | } | |
607 | } | |
608 | ||
609 | /* | |
610 | * Check for resource conflicts. Some channels can be either | |
611 | * analog or digital, but never both at the same time. | |
612 | * | |
613 | * Note that the constraints might depend on the specific model. | |
614 | * These tests might need some adjustment when support for more | |
615 | * models gets added to the driver. | |
616 | */ | |
617 | if (enabled_pod[0] && enabled_chan[2]) | |
618 | return SR_ERR; | |
619 | if (enabled_pod[1] && enabled_chan[3]) | |
620 | return SR_ERR; | |
621 | return SR_OK; | |
622 | } | |
623 | ||
624 | static int hmo_setup_channels(const struct sr_dev_inst *sdi) | |
625 | { | |
626 | GSList *l; | |
627 | unsigned int i; | |
628 | gboolean *pod_enabled, setup_changed; | |
629 | char command[MAX_COMMAND_SIZE]; | |
630 | struct scope_state *state; | |
631 | const struct scope_config *model; | |
632 | struct sr_channel *ch; | |
633 | struct dev_context *devc; | |
634 | struct sr_scpi_dev_inst *scpi; | |
635 | ||
636 | devc = sdi->priv; | |
637 | scpi = sdi->conn; | |
638 | state = devc->model_state; | |
639 | model = devc->model_config; | |
640 | setup_changed = FALSE; | |
641 | ||
642 | pod_enabled = g_try_malloc0(sizeof(gboolean) * model->digital_pods); | |
643 | ||
644 | for (l = sdi->channels; l; l = l->next) { | |
645 | ch = l->data; | |
646 | switch (ch->type) { | |
647 | case SR_CHANNEL_ANALOG: | |
648 | if (ch->enabled == state->analog_channels[ch->index].state) | |
649 | break; | |
650 | g_snprintf(command, sizeof(command), | |
651 | (*model->scpi_dialect)[SCPI_CMD_SET_ANALOG_CHAN_STATE], | |
652 | ch->index + 1, ch->enabled); | |
653 | ||
654 | if (sr_scpi_send(scpi, command) != SR_OK) | |
655 | return SR_ERR; | |
656 | state->analog_channels[ch->index].state = ch->enabled; | |
657 | setup_changed = TRUE; | |
658 | break; | |
659 | case SR_CHANNEL_LOGIC: | |
660 | /* | |
661 | * A digital POD needs to be enabled for every group of | |
662 | * 8 channels. | |
663 | */ | |
664 | if (ch->enabled) | |
665 | pod_enabled[ch->index < 8 ? 0 : 1] = TRUE; | |
666 | ||
667 | if (ch->enabled == state->digital_channels[ch->index]) | |
668 | break; | |
669 | g_snprintf(command, sizeof(command), | |
670 | (*model->scpi_dialect)[SCPI_CMD_SET_DIG_CHAN_STATE], | |
671 | ch->index, ch->enabled); | |
672 | ||
673 | if (sr_scpi_send(scpi, command) != SR_OK) | |
674 | return SR_ERR; | |
675 | ||
676 | state->digital_channels[ch->index] = ch->enabled; | |
677 | setup_changed = TRUE; | |
678 | break; | |
679 | default: | |
680 | return SR_ERR; | |
681 | } | |
682 | } | |
683 | ||
684 | for (i = 1; i <= model->digital_pods; i++) { | |
685 | if (state->digital_pods[i - 1] == pod_enabled[i - 1]) | |
686 | continue; | |
687 | g_snprintf(command, sizeof(command), | |
688 | (*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_STATE], | |
689 | i, pod_enabled[i - 1]); | |
690 | if (sr_scpi_send(scpi, command) != SR_OK) | |
691 | return SR_ERR; | |
692 | state->digital_pods[i - 1] = pod_enabled[i - 1]; | |
693 | setup_changed = TRUE; | |
694 | } | |
695 | ||
696 | g_free(pod_enabled); | |
697 | ||
698 | if (setup_changed && hmo_update_sample_rate(sdi) != SR_OK) | |
699 | return SR_ERR; | |
700 | ||
701 | return SR_OK; | |
702 | } | |
703 | ||
704 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
705 | { | |
706 | GSList *l; | |
707 | gboolean digital_added[MAX_DIGITAL_GROUP_COUNT]; | |
708 | size_t group, pod_count; | |
709 | struct sr_channel *ch; | |
710 | struct dev_context *devc; | |
711 | struct sr_scpi_dev_inst *scpi; | |
712 | int ret; | |
713 | ||
714 | scpi = sdi->conn; | |
715 | devc = sdi->priv; | |
716 | ||
717 | /* Preset empty results. */ | |
718 | for (group = 0; group < ARRAY_SIZE(digital_added); group++) | |
719 | digital_added[group] = FALSE; | |
720 | g_slist_free(devc->enabled_channels); | |
721 | devc->enabled_channels = NULL; | |
722 | ||
723 | /* | |
724 | * Contruct the list of enabled channels. Determine the highest | |
725 | * number of digital pods involved in the acquisition. | |
726 | */ | |
727 | pod_count = 0; | |
728 | for (l = sdi->channels; l; l = l->next) { | |
729 | ch = l->data; | |
730 | if (!ch->enabled) | |
731 | continue; | |
732 | /* Only add a single digital channel per group (pod). */ | |
733 | group = ch->index / 8; | |
734 | if (ch->type != SR_CHANNEL_LOGIC || !digital_added[group]) { | |
735 | devc->enabled_channels = g_slist_append( | |
736 | devc->enabled_channels, ch); | |
737 | if (ch->type == SR_CHANNEL_LOGIC) { | |
738 | digital_added[group] = TRUE; | |
739 | if (pod_count < group + 1) | |
740 | pod_count = group + 1; | |
741 | } | |
742 | } | |
743 | } | |
744 | if (!devc->enabled_channels) | |
745 | return SR_ERR; | |
746 | devc->pod_count = pod_count; | |
747 | devc->logic_data = NULL; | |
748 | ||
749 | /* | |
750 | * Check constraints. Some channels can be either analog or | |
751 | * digital, but not both at the same time. | |
752 | */ | |
753 | if (hmo_check_channels(devc->enabled_channels) != SR_OK) { | |
754 | sr_err("Invalid channel configuration specified!"); | |
755 | ret = SR_ERR_NA; | |
756 | goto free_enabled; | |
757 | } | |
758 | ||
759 | /* | |
760 | * Configure the analog and digital channels and the | |
761 | * corresponding digital pods. | |
762 | */ | |
763 | if (hmo_setup_channels(sdi) != SR_OK) { | |
764 | sr_err("Failed to setup channel configuration!"); | |
765 | ret = SR_ERR; | |
766 | goto free_enabled; | |
767 | } | |
768 | ||
769 | /* | |
770 | * Start acquisition on the first enabled channel. The | |
771 | * receive routine will continue driving the acquisition. | |
772 | */ | |
773 | sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50, | |
774 | hmo_receive_data, (void *)sdi); | |
775 | ||
776 | std_session_send_df_header(sdi); | |
777 | ||
778 | devc->current_channel = devc->enabled_channels; | |
779 | ||
780 | return hmo_request_data(sdi); | |
781 | ||
782 | free_enabled: | |
783 | g_slist_free(devc->enabled_channels); | |
784 | devc->enabled_channels = NULL; | |
785 | return ret; | |
786 | } | |
787 | ||
788 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
789 | { | |
790 | struct dev_context *devc; | |
791 | struct sr_scpi_dev_inst *scpi; | |
792 | ||
793 | std_session_send_df_end(sdi); | |
794 | ||
795 | devc = sdi->priv; | |
796 | ||
797 | devc->num_frames = 0; | |
798 | g_slist_free(devc->enabled_channels); | |
799 | devc->enabled_channels = NULL; | |
800 | scpi = sdi->conn; | |
801 | sr_scpi_source_remove(sdi->session, scpi); | |
802 | ||
803 | return SR_OK; | |
804 | } | |
805 | ||
806 | static struct sr_dev_driver hameg_hmo_driver_info = { | |
807 | .name = "hameg-hmo", | |
808 | .longname = "Hameg HMO", | |
809 | .api_version = 1, | |
810 | .init = std_init, | |
811 | .cleanup = std_cleanup, | |
812 | .scan = scan, | |
813 | .dev_list = std_dev_list, | |
814 | .dev_clear = dev_clear, | |
815 | .config_get = config_get, | |
816 | .config_set = config_set, | |
817 | .config_list = config_list, | |
818 | .dev_open = dev_open, | |
819 | .dev_close = dev_close, | |
820 | .dev_acquisition_start = dev_acquisition_start, | |
821 | .dev_acquisition_stop = dev_acquisition_stop, | |
822 | .context = NULL, | |
823 | }; | |
824 | SR_REGISTER_DEV_DRIVER(hameg_hmo_driver_info); |